<template>
  <li
    :class="isActive ? 'active' : ''"
    @mouseenter="changeActive('enter')"
    @mouseleave="changeActive('leave')"
  >
    <label>
      <input type="checkbox" :checked="done" @click="selected($event)" />
      <span>{{ thing }}</span>
    </label>
    <button class="btn btn-danger" @click="deleteByID">删除</button>
  </li>
</template>

<script>
export default {
  name: "Item",
  props: ["id", "thing", "done", "changeDoneById", "singleDeleteById"],
  data() {
    return {
      isActive: false,
    };
  },
  methods: {
    changeActive(condition) {
      this.isActive = condition === "enter";
    },
    selected(e) {
      this.changeDoneById(this.id, e.target.checked)
    },
    deleteByID() {
      if (confirm('您确定要删除吗？')) {
        this.singleDeleteById(this.id)
      }
    }
  },
};
</script>

<style scoped>
/*item*/
li {
  list-style: none;
  height: 36px;
  line-height: 36px;
  padding: 0 5px;
  border-bottom: 1px solid #ddd;
}

li label {
  float: left;
  cursor: pointer;
}

li label li input {
  vertical-align: middle;
  margin-right: 6px;
  position: relative;
  top: -1px;
}

li button {
  float: right;
  display: none;
  margin-top: 3px;
}

li:before {
  content: initial;
}

li:last-child {
  border-bottom: none;
}

li.active {
  background-color: #ccc;
}

li.active button {
  display: block;
}

button {
  display: none;
}
</style>